Are Subdomains Bad for SEO?

So what do you think? Are subdomains bad for SEO? Everyone has an opinion. On April 4 Todd Friesen Tweeted: “When it comes to domains and subdomains: consolidate and win.” I couldn’t resist the temptation, so the next day I tweeted back: [email protected] MY day isn’t yet done — http://bit.ly/HsRGMF Nah na nah na nah NAH (REAL query w/traffic, btw)”. I think there is value in a subdomain that people search for and for which a major search engine displays sitelinks. Of course, there are no guarantees that the sitelinks will always be there.